Carving-machine.



No. 841,183. PATENTED JAN. 15, 1907. F. H. RICHARDS.

GARVINGMAOHINE.

APPLICATION FILED MAR. 24, 1902.

3 SHEETS-SHE T 1.

THE NORRIS PETERS co., WASHINGTON, o c.

No. a41;1s3. PATENTED' JAN. 15,1907;

F. H. RICHARDS.

GARVING MACHINE.

APPLIOATION FILED MAR. 24, 1902.

I 3 SHEETSSHEET 2.

PATENTED JAN. 15, 1907.

- F. H. RICHARDS.

OARVING MACHINE.

APPLICATION FILED MAR. 24, 1902.

3 SHEETSSHBET 3.

FRANCIS H. RICHARDS, OF HARTFORD, CONNECTICUT.

CARVING-IVIACHINE.

Specification of Letters Patent.

Patented Jan. 15, 1907;

Application filed March 24;, 1902. Serial No. 99,623

To all whom it may concern:

Be it known that I, FRANCIS H. RICHARDS, a citizen of the United States, residing at Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Carving- Machines, of which the following is a specification.

This invention pertains to feeds designed to effect a positive feed of stock to operating devices, and more particularly relates to intermittent feeds for positively feeding stock to an intermittently-operative device-such,

for instance, as a carving-machine'and this invention further pertains to the novel combination of a feed of the class described with an intermittently-operative machine.

My invention embodies continuously-revolved feed-rolls carried by a reciprocatory carriage and mechanism for operating the rolls and carriage in such relation that the retrograde movement of the carriage will exactly neutralize the forward feed of the rolls and the. forward movement of the carriage augmented by the forward feed of the rolls will produce the feed in cooperation with the operative device being fed. 1

The objects of myinvention are to provide an intermittent -feed mechanism in which the active grip upon the stock is continuous, which shall be connectedly driven in fixed relation to an intermittently-operative device by the driving agent of said intermittently-operative device, and to provide an improved organization of mechanical elements, which constituting such a device shall be most perfect and eflici'ent in operation.

In the drawings accompanying and forming part of this specification, Figure 1 is a front elevation of a machine embodying my invention; Fig. 2, a vertical cross-section on line m of Fig. 1; Fig. 3, a right-hand end view; Fig. 4, a detail in elevation of the feed mechanism; Fig. 5, a vertical cross-section on line y y of Fig. 4:; Fig. 6, a perspective detail showing the relative positions of the tools and stock; Figs. 7 and 8, details in section showing the relative positions of the tools and stock. Fig. 9 is a detail in cross-section of the stock after the operation of the tools thereon; Fig. 10, a detail in cross-section of a tool-carriage, and Fig. 11 a detail in elevation of a tool-carriage.

Referring to the drawings, upon the machine-framing A are arranged two tool-carriages 2 and 3. The tool-carriage 2 works in a dovetail guide 4 on the top of the table B, which latter can be shifted in or out and set at various angles as required for the work, as it is adjustably fixed to an extension O,bolted or cast onto the frame A by means of screwbolts 5 passing through slots 6 in the extension 0. Similarly the tool-carriage 3 works in a dovetail guide6 on the side of a table 7, which can be shifted up or down and set at various angles as required for the work, as it is adjustably fixed to an extension D, bolted or cast on the frame A by means of screw-- bolts 8 passing through slots 9 in the extension D. The tool-carriages 2 and 3 are recipocated by the eccentric-rods 10 and 11.

The eccentrics 12 and 13, carrying the rods 10 and 11, are mounted on a shaft 14, carrying and driven by a fly-wheel or pulley 15. The eccentrics are preferably arranged as shown, so that the tools on the respective tool-carriages are alternately brought into contact with the molding or other work to be carved; but this alternate action is only necessary when the carriages and their tools converge toward the same place on the molding, so that when one set of tools has left the molding another set enters it. Two or more cuts thus made at different angles by suitably-shaped converging tools meeting in the wood make and detach chips of the wood and produce the desired pattern.

The construction of the tool-heads 16 and 17 on the tool-carriages 2 and 3 will be clearly understood by reference to Figs. 10 and 11. The body 16 (or 17) of the head is formed with a dovetail portion 19 and is adjustably held in a longitudinal T-slot 20 in the carriage 2 (or 3) by means of the wedge-shaped gibs 21 adjustably mounted in the arm of the T-slot 20. Set-screws 22, threaded in the carriage 2 (or 3) bear on the gibs 21 and serve to shift the gibs and head laterally when both are operated and to bindthe headin the carriage when one only is screwed in.

The body 16 of the tool-head has upstanding side pieces 18, on which is bolted a clampbar 23. A set-screw 24 is threaded in the clamp-bar 23 to bear on the tool 25 and is provided with a jam-nut 26. The tool 25 at its back end abuts-against a set-screw 27.

in the upstandlng flange 28, which allows of a fine longitudinal adjustment of the tool on the body 18 and takes up the thrust. A setscrew 29 in the upstanding flange 30 on the carriage 2 (or 3) allows of a fine longitudinal adjustment of the'head 16, (or 17.) Each of the set-screws 27 and 29 is provided with a jam-nut 31.

The shaft 14 projects without the frame A and carries a driving-gear 32. The frame is extended to form a support E for thefeed mechanism. A shaft 33 is mounted in bearings 34 in support E and 35 in frame A and is restricted against longitudinal movement by collar 36 abutting the bearing 35 and the hub of a lateral cam-wheel 37, fast on the outer end of said shaft 33.

A; driven gear 48, fast on shaft 33, meshes With gear 32' on shaft 14-and transmits motion from shaft 14 to shaft- 33. Slides 38 38 in thesupport- E, parallel with the shaft 33, accommodate a reciprocating carriage 39. The carriage 39 consists ofa hollow casting 40 and a top plate 41, bolted upon the casting 40. Guides 42onthe carriage 39 slide in 'slides 38 38 in the support E. A sleeve 43 is rotatably mounted inbearings 44 45 in the bottom of carriage 39, through which sleeve the shaft 33 is longitudinally slidable. A

, longitudinal key .46 is splined in the shaft 33 and engages an internal key-seat 47 in the sleeve 43. It will therefore be seen that the motion of shaft 33' will be transmitted to sleeve 43, while'the sleeve is carried longitufast on shaft 52, meshes with gears 56 and 57 respectively, mounted on shafts 58 and 59, mounted in bearings in the carriage 39. The gears 56 and 57 are of equal diameter and are driven at the same speed and in the same direction bygear 55. The shafts 58 and 59 carry feed-rolls 62 of, equal diameter, provided with peripheral teeth 63, designed togrip the stock. Above theshafts 58 and 59 are respectively mounted in bearings 64 in the carriage 39 shafts 65 and 66 carrying and driven by gears 67 and 68, respectively, meshing with gears 56 and 57 on shafts 58 and 59., The shafts 65 and 66 carry presserrolls70, which substantially conform' to the.

face of the stock, but have active grippingperipheries of equal diameter with those of feed-rolls 62. The bearings 64 are vertically movable in guides 71 in the carriage 39 and are. rendered somewhat resilient by springs 72, compressed between said bearings and the'top plate 41.

The presser-rolls and their shafts and gearsare removableby removing top plate 41, springs 72, and bearings 64 and other rolls 'in like return to one another.

conforming to difierently-configured stock maybe substituted, having, however, an ac tive gripping-periphery of equal diameter.

An arm 73 is pivoted to the support E at 74 and carries two loose rollers 75 and 76, mounted on studs 77 and 78, which rollers engage opposite sides of the lateral camwheel 37. The upper end of the arm 73 is connected to the carriage 39 by a link 79,

, pivoted to said arm at 80 and to said carriage The operation is as follows: The power is applied to the pulley 15, rotating shaft 14. The eccentrics 12 and 13 operate the tools 25 and 26 through the eccentric-rods 10 and 11. The tools 25 and 26 enter the stock one after the other, reaching their limit of cut one after the other and are withdrawn from the stock The lateral cam 37 is set upon the shaft 33, which is definitely connected with the shaft'14, carrying the eccentrics, and has such form that the rollers 75 and 76 in engagement therewith will be moved in the direction of the feed during the interval between the times when the last tool leaves the stock and thefirst tool engages the stock-that is, when both tools are without the profile of the stockand said rollers 75 and 76 will be moved in the opposite direction during the interval between the times when the first tool engages the stock and the last tool leaves the same. This latter movement is rendered uniform by the form of the lateral cam 37 at the points engaged by the rollers 75 and 76 during the same. 1 The backward movement of the rollers carries the arm 73 backward, which transmits the backward movement through link 79 to the carriage 39. The shaft 33 1s constantly rotated, rotating the worm 5O splined thereon, which in turn rotates with the worm-wheel 51, fast on shaft 52. This rotation of shaft 52 is transmitted through gear 55 to the two gears 56 and 57, fast on shafts 58 and 59, and from these gears to the gears 67 and 68, fast on shafts 65 and 66. The rotation of shafts 58 and 59 takes place in the same direction, carrying the feed-rolls 62,fast'thereon,

1 The lateral cam 37 is given a form throughout that portion of its cam-faces which engage the rollers 75 and 76 during the backward movement of the carriage that will give said carriage a velocity during its backward 1 movement equal to peripheral velocity of the feed-rolls which travel at their point of contact with the stock constantly in a forward direction. It will therefore be seen that with relation to the stock the backward movement of the carriage will exactly neutralize the forward feed of the feed-rolls, leaving the stock stationary with regard to the shaft 33 and the tools or-such parts of the machine as have a fixed position relative to the stock-guide. The forward movementof the carriage will therefore augment the forward feed 'of the feed-rolls, and the velocity and extent of this forward feed may be regulated by conforming the active faces of the cam 37 during this movement to give the required feed.

The presser-rolls 70 may each be made in one piece conforming to the face of the stock or be made in a plurality of disk-sections, (as shown at 82, 83, and 84.) All of said sections which do not conform to the active grippingperiphery of the presser-roll 7 0-for instance, 82 and 84may be mounted loosely upon the shafts 65 or 66, while that section which does conform to the active grippingperipheryfor instance, 83may be fast upon said shaft to be driven thereby. It is obvious, however, from this description that a variety of means may be employed for transmitting from the driving-shaft of the machine to be fed a constant rotation to the feed-rolls carried upon the carriage, while at the same time a variety of mechanisms might be employed to impart a reciprocating motion to the carriage, the retrograde movement of which would neutralize the forward periphery feed of the feed-rolls, and I therefore do not limit myself to the exact construction and organization shown, but claim as my invention the principles involved irrespective of the equivaent means which may be employed to carry into effect said principles.

I do not limit the use of my invention in combination with a carving machine, al-

. though it is peculiarly adapted for such use,

but desire to call attention to the fact that it is well adapted for use with any intermit tently-acting machine, such as a punchingmachine, stamping-machine, or the like.

It will be noted that my device is constantly operatively connected from the feedrolls to the driving mechanism of the machine with which it is combined,and at no, time 1s the connection broken, as is the case with an intermittent-feed mechanism operated by a ratchet-and-pawl gear or the like.

This feature obviates any discrepancy bemeans continuously connected to said mechamsm for lmpartlng mtermittent working movement thereto, of means for continuously gripping the stock to be fed to said tool, I

means driven by said driving means for continuously imparting a constant movement to sald grlpplng means, and means for mtermittently retarding the actual feed given the work by the gripping means.

2. In an intermittent feed, the combination of a reciprocating carriage and a constantly-revolving roll carried thereby.

3. In an intermittent feed, the combina tion of a reciprocating carriage and a plurality of constantly-revolved rolls carried thereby.

4. In an intermittent feed, the combination of a reciprocating carriage, one or more rolls carried thereby, and means for impartin g rotation to said rolls at a peripheral veloc ity equal to the velocity of movement of said carriage in one direction.

5. In an intermittent feed, the combination of a reciprocating carriage, one or more constantly-revolving rolls carried thereby, and means for imparting a reciprocating movement to said carriage in each direction at a velocity equal to the peripheral velocity of said rolls.

6. In an intermittent feed, the combination of a powershaft, a car iage, one or more feed-rolls carried by said carriage and operably conrected with said shaft, and lateral cam means on said shaft engaging and reciprocating said carriage at a velocity equal to the peripheral velocities of said rolls.

7 In an intermittent feed, the combination of a power-shaft, a carriage, one or more feed-rolls carried by said carriage, a spline power-transmission train between said shaft and rolls, and means connected to said carriage to reciprocate the same at a velocity ro ls.

8. In an intermittent feed, the combination of a power-shaft, a carriage, one or more feed-rolls carried by said carriage, a geartrain carried by said carriage and driving said rolls and splined to said shaft. and means connected to said carriage to reciprocate the same at a velocity equal to the peripheral velocity of said rolls.

9. In an intermittent feed, a carriage, feed mechanism carried by and continuously operative relative to said carriage, and means for imparting a reciprocating movement to said carriage alternately neutralizing and augmenting the action of said feed.

10. The combination of a power-shaft, a carriage, a feed carried by said carriage and continuously operated from said shaft, and means carried by said shaft for reciprocating said carriage to alternately neutralize and augment the action of said feed.

11. In a feeding mechanism. the combination of a revoluble feeding member, means for revolving said member constantly at uniform speed, and means for reciprocating said feeding member bodily in the line of the feeding movement.

12. In a feeding mechanism, the'combination of a revoluble feeding-roll, means for revolving said roll constantly at uniform speed, and means for reciprocating said feeding-roll bodily in the line of the feeding movement.

13. In a feeding mechanism, the combina tion of a revoluble feeding member, means for revolving said member constantly at uniform. speed, and means for reciprocating said feeding member bodily in the line of the feeding movement at a speed equal to the peripheral velocity of said feeding member.

14. In a feeding mechanism, the combination of op osing feed-rolls, means for revolving one 0 said rolls constantly at uniform speed, and means for moving said rolls bodily in a direction opposite to the feeding movement at a speed equal to the peripheral s eed of said rolls, and for returning said rol s to normal position.

15. In a feeding mechanism, the combina-' tion of'opposing feed-rolls geared together, means for revolving one of said rolls constantly at uniform speed, and means for moving said rolls bodily in a direction opposite to the feeding movement at a speed e ual to the peripheral speed of said rolls, and 'or return ing said rolls to normal osition.

16. In a feeding mec anism, the combination of a plurality of feeding-rolls geared together, feeding-rolls mounted to oppose said plurality and also geared thereto, means for revolving all of said rolls at uniform speed, and means for moving said rolls together in a direction opposite to the feeding movement at a-speed equal to the peripheral speed of said rolls, and for returning said rolls to normal position.

17. In a feeding mechanism, the combination of a feed-roll, means for reciprocating said roll bodily along the stock and in constant contact therewith, and means for causing said roll to run along the stock during the return stroke to prevent movement thereon and to feed the stock during the forward stroke of the reciprocation.

18. In a feeding mechanism, the combination of opposite gri ping-rolls, means for reciprocating said ro ls bodily along the stock and in constant contact therewith, and means for causing said rolls to run along the stock during the return stroke to prevent movement thereon and to feed the stock during the forward stroke of the reciprocation.

19. .In a feeding mechanism, the combination of a carriage, means for reciprocatingsaid carriage, a plurality of feeding-rolls mounted upon said carriage and geared together, and means for causing said rolls to,

run along the. stock during one stroke of the carriage to prevent movement thereon and to feed the stock during the returnv stroke thereof.

20. In a feeding mechanism, the combination of a carriage, means for reciprocating said carriage, a plurality of feeding-rolls mounted upon said carriage and geared together, op

posite gripping-rolls also geared to said feedrolls, and means for causing said rolls to run along the stock during one stroke of the carriage to prevent movement thereon and to feed the stock during the return stroke thereof. v

21. In a carving-machine, the combination of means for operating upon the stock, driving means continuously connected to said operating means, and a continuous-grip intermittent stock feed mechanism positively connected to said operative means and having constantly-operative connection throughout.

22. In a carving-machine, the combination of a cutting-tool, driving means positively connected to said tool for reciprocating the same, a revoluble feeding member, means connected to said driving means for revolving said feeding, member constantly at uniform speed, and means for reciprocating said feeding member bodilyin the line of the stockfeeding movement.

23. In a carving-machine, the combination of a cutting-tool, driving means positively connected to said tool for reciprocating the same, a stock-feeding roll, and means connected to said driving means for revolving said roll constantly at uniform speed, and for reciprocating said roll bodily in the line of the stock-feeding movement; the mechanism being so organized that the tool operates upon the stock while the roll is running back, and is out of the stock while the roll is running forward.

24. In a carving-machine, the combination of a cutting-tool movable into and out of the stock, a stock-guide, a stock-feeding roll mounted for cooperation with said stockguide, means for revolving said feed-roll constantly at uniform speed, a positive connection between said cutting-tool and said rollrevolving means, and means positively connected to said connection for reciprocating said roll bodily in the line of the stock-feeding movement.

25. In a carving-machine, the combination of a cutting-tool movable into and out of the stock, a stock-guide, a stock-feeding roll mounted for cooperation with said stockguide, means for revolving said feed-roll constantly at uniform speed, a positive connection between said cutting-tool and said rollrevolving means, and meansv positively connected to said connection for reciprocating said roll bodily in the line of the feeding movement at a speed equal to the peripheral velocity of said roll.

26. In a carving-machine, the combination of a cutting-tool, means for moving the tool into and out of the stock, a stock-guide, a stockgripping feed-roll, means positively connected to said tool-moving means for revolving said roll constantly, means for mov ing said roll bodily in a direction oppositev to the stock-feeding movement at a speed equal to its peripheral velocity, and for returning said roll to normal position, and an opposing stock-gripping feed-roll; the mech anism being so organized that said tool is moved into the stock when said roll is moving opposite to the direction of the stock-feeding movement.

27. In a carving-machine, the combination of a cutting-tool, driving means positively connected to said tool for reciprocating the same, a plurality of revoluble feeding members, means connected to said driving means for revolving said feeding members constantly at uniform speed, and means for reciprocating said feeding members bodily in the line of the stock-feeding movement.

28. In a carving-machine, the combination of a cutting-tool, driving means positively connected to said tool for reciprocating the same, a plurality of stock-feeding rolls geared together, and means connected to said driving means for revolving said rolls constantly at uniform speed, and for reciprocating said rolls bodily in the line of the stock-feeding movement; the mechanism being organized so that the tool operates upon the stock while the rolls are running back, and is out of the stock while the rolls are running forward.

29. In a carving-machine, the combination of a cutting-tool movable into and out of the stock, a stock-guide, opposite gripping feedrolls mounted in line with said stock-guide, means for revolving at least one of said feedrolls constantly at uniform speed, positive connections between said cutting-tool and said roll-revolving means, and means positively connected to said connections for reciprocating said rolls together bodily in the line of the stock-feeding movement.

equal to the peripheral velocity of said rolls;

and opposing cooperative rolls.

31. In a carving-machine, the combination of a cutting-tool, means for moving the tool into and out of the stock, a stock-guide, a plurality of stock-gripping feed-rolls, means positively connected to said tool-moving means for revolving said rolls constantly, means for moving said rolls bodily in a direction opposite to the stock-feeding movement at a speed equal to their peripheral velocity,

and for returning said rolls to normal position, and an opposing stock-gripping feedroll; the mechanism being so organized that said tool is moved into the stock when the first-mentioned rolls are moving opposite to the direction of the stock-feeding movement.

FRANCIS H. RICHARDS. Witnesses:

FRED. J. DOLE, JOHN O. SEIFERT. 

